GUIDE WIRE FOR CATHETERS AND METHOD OF MANUFACTURING SAME.

摘要

A guide wire for a catheter consists of a linear elastic alloy forming the wire, and is heat treated so that the flexibility is increased progressively from the base towards the tip. At least the tip of the linear base material may be covered with a thermoplastic resin and/or a coiled spring. A method of manufacturing such a catheter guide wire, consisting of the steps of dividing the chip of the base material into a number of sections. The sections are heat treated at different temperatures, and under different time conditions so that the flexibility of the base material increases progressively from the base towards the tip.